Oki C3530nMFP Maintenance Manual page 30

ID unit and the toner sensor are not facing each other as specified due to improper setting of
the ID unit or for other reason, the detection may not be executed normally, resulting in a toner
sensor error.
Toner Counter Principle
After the image data is developed into 2 value data to enable printing using the MFP, the print
dot number is counted by the LSI. The amount of the toner used is counted from the above
count value and the remaining amount is displayed. On the other hand, detection of the low
toner by the toner sensor is physically made when the amount of the toner remaining in the
cartridge comes to be under certain amount.
Toner sensor
(light reception sensor)
Principles of ID, Belt and Fusing Counter
ID Counter
three
Belt Counter
sheets
Fusing Counter :
the
number of count is decided by multiples of Legal 13 inches.(Number under
decimal point is rounded up.)
43605601TH Rev. 1
Toner cartridge lever
Luminous LED
Shading board
: 1 count is the value of one third of the amount of drum rotation when
A4 sheets of paper are continuously printed.
: 1 count is one third of the amount of the belt rotation when three A4
of paper are continuously printed.
Standard is the length of Legal 13 inches sheet of paper. 1 count is
sheet of paper under that length and when the length is more than that, the
Oki Data CONFIDENTIAL
Toner stir
Shutter
t h e
30 /